An auction of 300 pieces of pop memorabilia raised over $650,000.
A range of musical items have been auctioned in New York, including a poster with the signatures of all four Beatles.
The Sgt Pepper souvenir poster was the most popular item at the Christie's auction, selling for $52,500 (£31,720).
In addition, handwritten lyrics by Bob Dylan were snapped up for $25,000, while a bass guitar once owned by Nirvana legend Kurt Cobain went for $43,750.
Simeon Lipman, head of popular culture at the auction house, said the high prices of memorabilia are often caused by a feeling of nostalgia in buyers.
He added: "Even in an unstable economy, you'll see peaks for certain prices."
The auction of 300 musical items reached a value of more than $650,000, the firm also revealed.
Earlier this week, an anonymous British philanthropist spent $164,940 on a CD recorded by former Soviet leader Mikhail Gorbachev.
The album, which is called Old Letters and includes seven ballads, was sold at auction for the Raisa Gorbachev Foundation.
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